Details
| Original language | English |
|---|---|
| Pages (from-to) | 1204-1211 |
| Number of pages | 8 |
| Journal | Structural concrete |
| Volume | 20 |
| Issue number | 4 |
| Early online date | 6 May 2019 |
| Publication status | Published - Aug 2019 |
Abstract
This paper is published on the occasion of the 65th birthday of Prof. Dr.-Ing. Ludger Lohaus, Director of the Institute of Building Materials Science, Leibniz University Hannover, and coordinator of the SPP 2020 offering congratulations. Concrete specimens that are submerged in water have a significantly lower fatigue resistance than those that are stored and tested in air. This phenomenon was recognized in the past, but it is still unknown how the moisture content in the microstructure of the concrete influences its resistance against fatigue deterioration. Hence, within the Priority Program SPP 2020 “Cyclic deterioration of High-Performance Concrete in an experimental virtual lab”, the influence of different moisture contents in the microstructure and the influence of water as an environment on the fatigue resistance of a high-strength concrete are investigated at the Institute of Building Materials Science, Leibniz University Hannover. This project focuses especially on additional water-induced damage mechanisms involved in the degradation process. This paper presents results of fatigue tests on high-strength concrete specimens with different moisture contents tested in air and underwater. The results of the fatigue tests are analyzed regarding the numbers of cycles to failure and selected damage indicators, such as stiffness development and acoustic emission activity.
Keywords
- fatigue deterioration, high-strength concrete, moisture content, stiffness, water-induced degradation mechanisms
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Materials Science(all)
- Engineering(all)
- Mechanics of Materials
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In: Structural concrete, Vol. 20, No. 4, 08.2019, p. 1204-1211.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of moisture content in the microstructure on the fatigue deterioration of high-strength concrete
AU - Tomann, Christoph
AU - Oneschkow, Nadja
N1 - Funding Information: This research project is funded by the German Research Foundation (DFG) within the scope of Priority Program SPP2020 “Cyclic deterioration of High-Performance Concrete in an experimental virtual lab.” The authors would like to express their gratitude for the financial support.
PY - 2019/8
Y1 - 2019/8
N2 - This paper is published on the occasion of the 65th birthday of Prof. Dr.-Ing. Ludger Lohaus, Director of the Institute of Building Materials Science, Leibniz University Hannover, and coordinator of the SPP 2020 offering congratulations. Concrete specimens that are submerged in water have a significantly lower fatigue resistance than those that are stored and tested in air. This phenomenon was recognized in the past, but it is still unknown how the moisture content in the microstructure of the concrete influences its resistance against fatigue deterioration. Hence, within the Priority Program SPP 2020 “Cyclic deterioration of High-Performance Concrete in an experimental virtual lab”, the influence of different moisture contents in the microstructure and the influence of water as an environment on the fatigue resistance of a high-strength concrete are investigated at the Institute of Building Materials Science, Leibniz University Hannover. This project focuses especially on additional water-induced damage mechanisms involved in the degradation process. This paper presents results of fatigue tests on high-strength concrete specimens with different moisture contents tested in air and underwater. The results of the fatigue tests are analyzed regarding the numbers of cycles to failure and selected damage indicators, such as stiffness development and acoustic emission activity.
AB - This paper is published on the occasion of the 65th birthday of Prof. Dr.-Ing. Ludger Lohaus, Director of the Institute of Building Materials Science, Leibniz University Hannover, and coordinator of the SPP 2020 offering congratulations. Concrete specimens that are submerged in water have a significantly lower fatigue resistance than those that are stored and tested in air. This phenomenon was recognized in the past, but it is still unknown how the moisture content in the microstructure of the concrete influences its resistance against fatigue deterioration. Hence, within the Priority Program SPP 2020 “Cyclic deterioration of High-Performance Concrete in an experimental virtual lab”, the influence of different moisture contents in the microstructure and the influence of water as an environment on the fatigue resistance of a high-strength concrete are investigated at the Institute of Building Materials Science, Leibniz University Hannover. This project focuses especially on additional water-induced damage mechanisms involved in the degradation process. This paper presents results of fatigue tests on high-strength concrete specimens with different moisture contents tested in air and underwater. The results of the fatigue tests are analyzed regarding the numbers of cycles to failure and selected damage indicators, such as stiffness development and acoustic emission activity.
KW - fatigue deterioration
KW - high-strength concrete
KW - moisture content
KW - stiffness
KW - water-induced degradation mechanisms
UR - http://www.scopus.com/inward/record.url?scp=85065448476&partnerID=8YFLogxK
U2 - 10.1002/suco.201900023
DO - 10.1002/suco.201900023
M3 - Article
AN - SCOPUS:85065448476
VL - 20
SP - 1204
EP - 1211
JO - Structural concrete
JF - Structural concrete
SN - 1464-4177
IS - 4
ER -